The action the muscle spindle has on the muscle when excited is which of the following?
a. the muscle fibers relax
b. the muscle fibers contract
c. the muscle is lengthened
d. the muscle produces force
Answer: B
The action the muscle spindle has on the muscle when excited is which of the following?
a. the muscle fibers relax
b. the muscle fibers contract
c. the muscle is lengthened
d. the muscle produces force